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<h1 class="topictitle1">开启实时勒索检测</h1>
<div id="body8662426"><p id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_p1069116557153">参考本节操作，开启实时勒索检测。</p>
<div class="section" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_section717685944911"><h4 class="sectiontitle">前提条件</h4><p id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_p33138216509">待进行实时勒索检测的文件系统已经开启了NFS共享。</p>
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<div class="section" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_section1369582063219"><h4 class="sectiontitle">操作步骤</h4><ol id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_ol13790921131411"><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_zh-cn_topic_0000001166366216_zh-cn_topic_0000001091431193_li1570821013536"><span>在导航栏选择“数据安全 &gt; 防勒索 &gt; 勒索检测设置”。</span></li><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li157482581167"><span>在<span class="uicontrol" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_uicontrol3749165891620">“NAS勒索检测”</span>页签，选择需要开启实时勒索检测的租户，单击“更多 &gt; 开启实时勒索检测”。</span><p><div class="note" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_note374935816163"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><ul id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_ul1074914583160"><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li9749158101610">您也可以勾选多个需要开启实时勒索检测的租户，单击租户列表上方的<span class="uicontrol" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_uicontrol187491158181618">“开启实时勒索检测”</span>。</li><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li197497589161">如果不需要实时勒索检测，请单击“更多 &gt; 禁用实时勒索检测”。或者勾选多个需要禁用实时勒索检测的租户，单击租户列表上方的“更多 &gt; 禁用实时勒索检测”。</li></ul>
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</p></li><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li789384832518"><span>按照界面提示完成确认操作。</span><p><div class="p" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_p20521105210253">在系统弹出的“确认”提示框中，您可以选择是否启用“勒索检测误告警分析”并单击“确定”。<div class="note" id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_note355583522414"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><p id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_p1156491191213">“勒索检测误告警分析”默认启用，启用后会进一步提高防勒索检测准确率，但预估会增加30分钟检测时间。</p>
<ul id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_ul111283417372"><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li2027514160382">若您对检测准确率要求更高，建议勾选“勒索检测误告警分析”。</li><li id="ZH-CN_TOPIC_0000002079639853__zh-cn_topic_0000001335629021_li14128441163716">若您对检测时间要求更高，建议不勾选“勒索检测误告警分析”。</li></ul>
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<div class="parentlink"><strong>父主题：</strong> <a href="zh-cn_topic_0000002043400826.html">使用实时勒索检测（适用于文件业务）</a></div>
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